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Explain how CO2 is able to control fires...

Explain how C`O_2` is able to control fires.

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Water is not used to control fires involving electrical equipment.Why?

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Explain how the hybrid structure is related to the structures of each of the following pairs of contributing resonance structures? (a) overset(oplus)(C )H_(2) underset((i))- underset(..)overset(Θ)C H_(2) harr CH_(2) underset((ii))= CH_(2) (b) H_(2)C underset((iii))= overset(..)(O): harr H_(2)C underset((iv))- underset(..)overset(..)O:^(-) (c ) R_(2) overset(+)C- underset(underset(underset((v))(R ))(|))C= overset(..)O: harr underset((vi))(R_(2)C = underset(underset(R )(|))(C) - overset(..)O:^(+)) (d) underset((VII)) (R-C^(+) = overset(..)(O): )harr underset((VIII))(R-C-= O:^(+)) (e ) underset((IX))(R- underset(underset( :O: )(||))(C)- underset(..)overset(..)OH) harr underset((IX))(R- underset(underset( :underset(..)(O): )(|))(C) - ""^(oplus")underset(..)OH)

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VGS PUBLICATION-BRILLIANT-COMBUSTION , FUELS AND FLAME-EXERCISE
  1. Water is not used to control fires involving electrical equipment.Why?

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  2. Give reasons. Paper by itself catches fire easily whereas a piece of p...

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  3. Explain how CO2 is able to control fires.

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  4. What are the three essential requirements for producing fire?

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  5. Why "CNG" being used as a fuel for vehicles?

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  6. Whether rusting is combustion reaction or not ? Why

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  7. List the ways adopted by fire fighters to combat fires.

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  8. Draw the diagram of candle flame and label all the zones.

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  9. Explain giving reasons: In which of the following situations water wil...

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  10. Explain giving reasons: In which of the following situations water wil...

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  11. In a few years the fuels on earth will be exhausted. Think, what would...

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  12. Spirit burns quickly like petrol but sodium metal and white phosphorou...

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  13. Why a wick is not used in gas burners?

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  14. Give supporting arguments for both the statements (1) fire is useful (...

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  15. Use of more fuels in our daily life causes air pollution and it is har...

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  16. Collect information about the history of spherical mirrors in human ci...

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  17. How do you organize your daily works with fuels to conserve bio-divers...

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  18. How does candle work?

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  19. Give reasons. LPG is a better domestic fuel than wood.

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  20. Explain how the use of CNG in automobiles has reduced pollution in our...

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